Attachment foe punching machines



" (No Model.) 2 Sheets-Sheet 1.

V 0. P. O'NEILL BEVEL SHEARING ATTACHMENT FOR PUNUHING MACHINES. No,593378. Patented Nov. 16, 1897.

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(No Model.) 2 Shefis -Sheet 2.

I 0. P. ONEILL. BEVEL SHEARING ATTAGHMENT'FOR PUNCHING MACHINES.v

No. 593,778. Patented Nov. 16, 1897.

@NVENQOQZ I By M W A TTORNEY-S.

UNITED STATES ATENT FFIcE.

CHARLES P. ONEILL, OF BROOKLYN, NEW YORK, ASSIGNOR OF ONE-HALF T GEORGEA. PI-IAIL, OF WINFIELD, AND FRANCIS E. KRUEGER, on NEW YORK, N. Y. I

BEVEL-S HEARING ATTACHMENT F OR PUNCHlNG-MACHINES.

SPECIFICATION forming part of Letters Patent No. 593,778, dated November16, 1897.

Application filed April 1'7, 1897. Serial No. 632,536. (No model.)

To all whom it may OO Referring to the drawings, A represents the Be itknown thatI, CHARLES P/ONEILL, a frame of the ordinary punching-machinefor citizen of the United States, residing at Brookpunching flanges,heads, angle-irons, &c.,

lyn, in the county of Kings and State of New which is provided, asusual, with the anvil 5 York, have invented certain new and usefulportion a and the upper arm or drive-shaft Improvements in BevelShearing Attachportion a. ments to Punching-Machines,of which the fol-The reciprocating rod R in the head of the lowing is a specification.punching-machine is operated in the usual This invention relates to abevel-shearing manner, as by means of a suitable eccentric 1o attachmentfor punching-machines of that connection of the drive-shaft b therewith,character in which plate-iron or boiler-sheets which drive-shaft isoperated by suitable are sheared, so as to impart a bevel cut forpower-transmitting mechanism B. v the known purpose of facilitating thetamp- This improved shearing attachment is aping of the joints formaking the same perplied to the punching-machine without chang- I 5fectly steam-tight; and the object of the .ining any of its parts, as bycutting away parts vention is to improve upon the shearing atof ordrilling new holes in the same. tachments heretofore in use byconstructing The attachment consists, as more particuthe same so thatthe most desirable bevel cut larly shown in Figs. 2, 3, and 4, of asupportis imparted to the boiler-plates. ing-plate O, which is providedwith depend- 7o 20 The invention consists in combination,with ing lugs Oand which is bolted, by means of the lower arm or anvil of the punch,which is bolts d, to the cross-head at the lower end of provided with afixed blade and an adjustthe reciprocating rod which usually carriesable stop adjacent to said blade, of a supthe punch. The lugs O of thissupportingporting-plate fixed to the reciprocating rod, plate 0 areprovided with bearings for the 25 to which the punch is ordinarilyapplied, a trunnions e at the upper part of an oscillathead pivoted atits upper portion to said suping knife-head E, which carries the bladeF, porting-plate-and provided with a blade 00- which is fitted in asuitable recess 6 in said acting to produce a shear cut in connectinghead and is firmly fastened or connected with the fixed bottom blade,and a link pivthereto by means of countersunk screws 6 3o oted to saidhead below its fulcrum and being This head E, together with the blade F,which connected to a suitable part of the punchingis fixed thereto, iscaused to oscillate through machine, said parts all being arrangedwiththe medium of links G,-which'are pivoted at in the throat of themachine. 9 below the pivotal connection 6 of the head In theaccompanying drawings, Figure 1 is with the lugs C, while the rear endsof the 3 5 a side elevation of a punching-machine,showlinks G arepivotally connected at g with the ing my improved shearing attachmentaplower ends of threaded bolts H, which by plied thereto. Fig. 2 is anenlarged side elemeans of nuts h are clamped to the flange of vation ofthe shearing attachment, showing the upper arm of the machine. 1 theparts of the punching-machine. Fig. 3 is Below the oscillating head Eand the knife 40 a front elevation of the parts shown in Fig. 2. carriedthereby is fixed to a block I on the Fig. 4. is a plan view showing theparts of my anvil portion of the machine, by means of improvedattachment which are applied to bolts 2', a blade F. This blade F isarranged the anvil-plate of the machine, the relative in such relationwith respect to the upper position of the movable shearing-blade beingblade F as that when the head E is oscillated 5 45 shown in dottedlines. Fig. 5 is a transverse said blade F will produce a shearingaction section of the fixed shearing-blade, and Fig. upon a sheet ofboiler-plate when said blade 6 is a detail sectional view showing abevel is moved across the cutting edge of the lower imparted to aboiler-plate by means of my blade F. In order to resemble more nearlyimproved shearing attachment. a shearing action, the blade F is set atan I00 50 Similar letters of reference indicate correangle with relationto the blade F, as shown sponding parts. I clearly in Fig. 3. As thereciprocating rod of the machine is moved downwardly the head E isoscillated, and by reason of the drawing action of the links G the bladeF is caused to describe a curve and its knife-edge is always incooperative relation with respect to the knife-edge of the lower andfixed blade F. The blade F consists, preferably, of an oblong four-edgedplate, each edge being adapted to act as a knife-edge. The blade F is tothis end made adjustable to four positions by countersinking each end ofthe bolt-holes f through which the bolts 1' pass. (See Fig. 5.)

WVhen a sheet of boiler-iron is to be out to a bevel, as shown in Fig.6, the outer edge of the same is placed in the throat of thepunching-machine until it abuts against a stop J, which can be adjustedto great or less extent by means of the hand-wheel j in the wellknownmanner. The power mechanism B of the machine is now set in motion andthe sheet sheared, so that the bevel 7c is produced, as shown in saidFig. 6. A thin tapering edge 70 is thereby formed on the sheet ofboileriron, so that said edge can be readily tamped for making theoverlapping joints of the sheets steam-tight.

Having thus described my invention, what I claim is- 1. The combinationwith a punching-machine, of a shearing attachment arranged in the throatof the machine, and consisting of a supporting-plate fixed to thereciprocating rod in the upper arm of the machine, a knifehead pivotedto said supporting-plate and provided with a cutting-blade, linkspivoted at one end to the said head below its pivotal connection withthe supporting-plate, and at the other end being pivotally connectedwith a support on the upper arm of the machine, and a fixed bladearranged upon the anvil portion of the machine, substantially as setforth.

2. The herein-described shearing attachment for punching-machines,comprising a lower fixed blade, a supporting-plate, an oscillatin g headpivoted to the supporting-plate and provided with a cutting-blade, linkspivoted to the said headat one end, fasteningbolts to which the otherends of the links are pivoted, and means for securing said parts to thepunching-machine, substantially as set forth.

In testimony that I claim the foregoing as my invention I have signed myname in presence of two subscribing witnesses.

CHARLES P. ONEILL.

Witnesses:

GEO. L. WHEELooK, GEO. W. J AEKEL.

